<div><font size="4">Dear staff:</font></div>
<div><font size="4"> The purpose of my calculations is to get quantity coulomb potential of a certain system and I've already get the result. </font></div>
<div><font size="4"> But I'm confused with the component of coulomb potential, is the contribution of core electron also counted in or just the valence electrons are calculated?</font></div>
<div><font size="4"> Thank you for your attention to this matter.</font></div>
<div><font size="4">Best regards</font></div>
<div><font size="4">Liu</font></div>